Manual

Page 20 of 21 FIRElink-NANO Air Sampling Detector – Installation and User Manual

9-5-0-425/ISS1/JUL10

Direct connection of a PC to the Communications Card is via a 9 pin RS-232 interface on the

Communications Card, using a null modem cable configuration, as shown in the diagram below:

A connected PC may access the detector event memory to review previous or current events, such as

detector Alarms or Faults. The detector internal Chart Recorder may also be accessed to allow analysis

of detector behaviour (see separate Remote Software Manual for further information). The PC cannot be

used to configure the detector except to enter time and date settings for the detector Event Log and Chart

Recorder to be viewed in the Remote Software. The detector does not incorporate a real time clock, so

the time and date need to be re-entered if the detector is powered down for any reason.

Installation of the Communications Card also provides the detector with RS-485 network communication

via the A, B and SCREEN terminals on the detector main board. This can be used for simple remote

display indication or integration into a larger site wide management and display system, separate from the

local Fire Detection and Alarm System.